Contactless and intelligence-wise code identification chip system

1. A contactless and intelligence-wise code identification chip system, said chip system transferring an identification code by a plurality of time slots and comprising: a plurality of contactless and intelligence-wise code identification chips including said identification code and being able to generate a random number, said random number being used to select one of said time slots for allocating said identification code; and a contactless and intelligence-wise code reader for reading said identification code from said plurality of time slots by a polling method; wherein at least two contactless and intelligence-wise code identification chips having the same identification code.

2. The chip system according to claim 1 wherein said contactless and intelligence-wise code identification chip is induced by a magnetic field energy, and transfers said identification code to said contactless and intelligence-wise code reader.

3. The chip system according to claim 1 wherein said random number is an integer among 0 to N, and N is an integer larger than 1.

4. The chip system according to claim 1 wherein an interval of said time slot is 2 ms.

5. The chip system according to claim 1 wherein said contactless and intelligence-wise code reader reads said identification code from said plurality of time slots by said polling method at least once.

6. The chip system according to claim 1 wherein said contactless and intelligence-wise code reader also includes a memory unit to record said time slot and said identification code.

7. The chip system according to claim 6 wherein said contactless and intelligence-wise code reader also includes an output unit to output a content of said memory unit.

8. A method for identifying a contactless and intelligence-wise code identification chip, said method providing a plurality of contactless and intelligence-wise code identification chips to transfer an identification code by a plurality of time slots, and comprising steps of: generating a random number by said contactless and intelligence-wise code identification chip, said random number being used to select one of time slots for allocating said identification code; and reading said identification code from said plurality of time slots by said contactless code reader with a polling method; wherein at least two contactless and intelligence-wise code identification chips having the same identification code.

9. The method according to claim 8 wherein said contactless and intelligence-wise code identification chip is induced by a magnetic field energy, and transfers said identification code to said contactless and intelligence-wise code reader.

10. The method according to claim 8 wherein said random number is an integer among 0 to N, and N is an integer larger than 1.

11. The method according to claim 8 wherein the interval of said time slot is 2 ms.

12. The method according to claim 8 wherein said contactless and intelligence-wise code reader reads said identification code from said plurality of time slots by said polling method at least once.

13. The method according to claim 8 wherein the contactless and intelligence-wise code reader also includes a memory unit to record said time slot and said identification code.

14. The method according to claim 13 wherein said contactless and intelligence-wise code reader also includes an output unit to output the content of said memory unit.